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Who Makes The "Best" Steel Arched Mainspring Housing for a Colt 1911A1?

7.7K views 27 replies 14 participants last post by  DesertRat  
#1 ·
Hey Folks,

I'm soliciting opinions from those in the know as to Brand / Model would be the "best" to replace the Colt factory flat mainspring housings I have on two older Colt 1911A1s. I really like my Colts, but I am sick of the flat MSHs because they just don't feel right in the hand, nor do they "look" right. The two Colt 1911A1s on which I'd like to swap out the mainspring housings consist of the following:

1. Colt 1911A1, Series 70 Combat Government (blued) which I believe dates to the 1970s.
2. Colt 1911A1, Series 70 (blued) which I believe dates to sometime between the early 2000s to perhaps early 2010s.

What I'm looking for is to simply replace the MSH with a high-quality, OEM in appearance without the need of a bunch of hand fitting, but with a good snug fit which looks original to the piece. I see that many customers on Midway USA brag about the Ed Brown model being high-quality fit and finish without hand fitting. Regardless, I know that there are other makers out there (e.g. EGW, Smith & Alexander, etc.), so I'd like to see what you folks suggest, given the above parameters.

Thank You in Advance,

~DR
 
Discussion starter · #5 · (Edited)
I've got an EGW with the lanyard loop on my Colt O1991 and it fit without any fitting and looks great. I've had a flat ed brown on the same gun that required no fitting also just swapped the internals and slid the new one right in...
Hey, Fordpuller, you are just a tease with that single sorta dark photo of that MSH ! 🤔 Where's the rest of the pics showing the rear and bottom??? Lol. 😁
 
Discussion starter · #11 ·
Most likely both of these pistols are recent Government Models and came with the flat MSH. It is counter-productive to refer to them as '1911A1'. Usually you can find Colt Gov Model parts on ebay. Any post-war Colt GM or Commander serrated MSH should be good to go unless you want the lanyard loop.
I appreciate the info, but am a little puzzled on the "counter-productive" part, as I do realize the difference between a 1911 vs 1911A1, and these two would clearly fall into the latter category.

Then again, perhaps some many view them to no loger really be A1 models either, but something else. Frankly, the only reason I added the "A1" on the end was to try to avoid being corrected on nomenclature. Personally, I just call them 1911s, regardless of vintage, but I was trying to be more corrrect, or perhaps less wrong. Foiled again! 😂

As for them both being recent manufacture, one definitely is, but I know for a fact the other one is much older, as I know it's origin.

Any additional guidance is appreciated. ~DR
 
Discussion starter · #13 · (Edited)
So many guns have had their factory arched housings swapped for flat, there must be drawers full of arched housings out there?
Precisely !!! One would think that finding a pristine blued steel Colt factory MSH swapped out for flat would be no big deal. Right?

Fact is I've been searching, albeit infrequently, for some 20 odd years for one and I have yet to find anything remotely approaching a pristine example. Go figure.
 
Discussion starter · #24 ·
How many lines <31-51>? down->-<7-9-12-13-?> across are you looking for? Got a photo of the part? I have some spares and some on guns from the 40's-80's. built with military parts. Is this the shape? Need a loop? I have a friend that deals in these parts also. PM me your # and I will put you in touch. I hate being the middle man. He talks on the phone too long.📞 View attachment 670693

4barrel,

PM Sent.